Re: git: kernel - Fix cluster_read random I/O heuristic

From:

Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>

Date:

Sun, 28 Mar 2010 11:56:15 -0700 (PDT)

The cluster fix for random I/O's is turning out to be a pretty
serious performance fix for programs doing a lot of random I/O,
like postgres. Not only does it fix the disk I/O performance but
I am getting reports that it also reduces the VM load (since it is
caching less read-ahead data that is never accessed).
-Matt